customSessionFactories don't work? activiti 5.14？

hi, I am new to Activiti .when using activiti5.14, then the configuration is as follows:1.<bean id="processEngineConfiguration" class="org.activiti.spring.SpringProcessEngineConfiguration"> <property name="customSessionFactories"> <list> <bean class="com.flow.service.activiti.CustomUserEntityManagerFactory"></bean> </list> </property></bean>